| 分段采样信号的相位关联技术 |
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| 引用本文： | 孟建. 分段采样信号的相位关联技术[J]. 系统工程与电子技术, 2004, 26(12): 1784-1786 |
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| 作者姓名： | 孟建 |
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| 作者单位： | 西南电子设备研究所,四川,成都,610036 |
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| 摘 要： | 分析了分段采样信号在复平面单位圆上的分布特征。针对采样点与分段信号在单位圆上分布不同,在此基础上提出了直接相位积累法和旋转相位积累法将分段采样信号进行相位关联,以实现相参积累和提高频率估计精度。直接相位积累法计算量大,抗噪声能力强,旋转相位积累法计算量小,抗噪声能力弱。这两种方法既可用于多段线性调频连续波探测回波的积累检测,也可用于多个相参脉冲信号的积累与频率估计。通过仿真验证了所提方法的有效性。
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| 关 键 词： | 频率估计 相参积累 相位关联 |
| 文章编号： | 1001-506X(2004)12-1784-03 |
| 修稿时间： | 2003-09-17 |
Phase association method of multisection sampled data |
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| MENG Jian. Phase association method of multisection sampled data[J]. System Engineering and Electronics, 2004, 26(12): 1784-1786 |
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| Authors: | MENG Jian |
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| Abstract: | The characteristics of multisection sampled data are analysed by means of unit circle on complex plane firstly. On the basis of the analysis, two kinds of phase association methods of multisection sampled data are proposed for accumulating multidata in phase and improve the precision of frequency estimation. The new methods can be used in both detection of FMCW echo and frequency estimation of correlative pulse train. Finally, simulation data is given to certify the capability of new methods. |
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| Keywords: | frequency estimation correlative accumulation phase association |
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